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Spencer Science lesson 5 asteroids, meteors, comets, and moons > Science Chapter 5 > Flashcards

Science Chapter 5 Flashcards

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1
Q

What is an asteroid?

A

a rocky mass up to several hundred kilometers wide that revolves around the sun.

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2
Q

Define comet.

A

a frozen mass of different types of ice and dust orbiting the sun.

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3
Q

What is a dwarf planet?

A

A large, round object that revolves around the sun but HAS NOT cleared the region around its orbit.

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4
Q

An imaginary line around which an object spins.

A

axis

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5
Q

One full orbit around the sun.

A

revolution

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6
Q

One whole spin of an object on its axis.

A

rotation

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7
Q

An explosive eruption of waves and particles into space.

A

solar flare

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8
Q

The path an object take as it revolves around a star, planet, or moon.

A

orbit

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9
Q

A group of stars that forms a pattern.

A

Constellation

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10
Q

What is a planet?

A

A large, round object that revolves around a star and HAS cleared the region around it orbit.

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11
Q

A natural object that revolves around a planet.

A

Moon

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12
Q

Any of the four closest planets to the sun. Name them…

A

Inner planet, Mars, Mercury, Earth, Venus

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13
Q

A spacecraft that gathers data without a crew.

A

space probe

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14
Q

Earth revolves around the sun in…

A

an elliptical orbit.

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15
Q

Earth’s tilt and revolution cause seasonal _________ in parts of the Earth.

A

Differences.

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16
Q

The sun is a _________ sized _________.

A

medium sized star.

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17
Q

Stars appear to move _______ the sky because Earth ______.

A

across, rotates

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18
Q

What are 2 characteristics of the inner planets?

A
  1. They have solid surfaces

2. They are relatively small.

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19
Q

Objects in the solar system stay in their orbits because of what?

A

gravity

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20
Q

What are the outer planets?

A

Jupiter, Saturn, Uranus and Neptune

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21
Q

What are 2 characteristics of the outer planets?

A
  1. They have gaseous surfaces.

2. They are relatively large.

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22
Q

What have been sent to study the outer planets?

A

Space Probes

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23
Q

A piece of a meteor that lands on Earth is called a _____.

A

meteorite

24
Q

Which layer of the sun gives off the light energy we see?

A

photosphere

25
Q

______ is the coldest of the inner planets.

A

Mars (because it has strong winds and polar ice caps)

26
Q

What is unique about Venus?

A

It rotates in the opposite direction as Earth.

27
Q

Polaris is also called what? Why is it important?

A

The north star is used for navigation.

28
Q

Name a constellation.

A

The big dipper.

29
Q

How can scientists determine the mass of the sun?

A
  1. From the speeds of the planets and

2. The shapes of their orbit around the sun.

30
Q

Define comet.

A

a frozen mass of different types of ice and dust orbiting the sun.

31
Q

What is a dwarf planet?

A

A large, round object that revolves around the sun but HAS NOT cleared the region around its orbit.

32
Q

An imaginary line around which an object spins.

A

axis

33
Q

One full orbit around the sun.

A

revolution

34
Q

One whole spin of an object on its axis.

A

rotation

35
Q

An explosive eruption of waves and particles into space.

A

solar flare

36
Q

The path an object take as it revolves around a star, planet, or moon.

A

orbit

37
Q

A group of stars that forms a pattern.

A

Constellation

38
Q

What is a planet?

A

A large, round object that revolves around a star and HAS cleared the region around it orbit.

39
Q

A natural object that revolves around a planet.

A

Moon

40
Q

Any of the four closest planets to the sun. Name them…

A

Inner planet, Mars, Mercury, Earth, Venus

41
Q

A spacecraft that gathers data without a crew.

A

space probe

42
Q

Earth revolves around the sun in…

A

an elliptical orbit.

43
Q

Earth’s tilt and revolution cause seasonal _________ in parts of the Earth.

A

Differences.

44
Q

The sun is a _________ sized _________.

A

medium sized star.

45
Q

Stars appear to move _______ the sky because Earth ______.

A

across, rotates

46
Q

What are 2 characteristics of the inner planets?

A
  1. They have solid surfaces

2. They are relatively small.

47
Q

Objects in the solar system stay in their orbits because of what?

A

gravity

48
Q

What are the outer planets?

A

Jupiter, Saturn, Uranus and Neptune

49
Q

What are 2 characteristics of the outer planets?

A
  1. They have gaseous surfaces.

2. They are relatively large.

50
Q

What have been sent to study the outer planets?

A

Space Probes

51
Q

A piece of a meteor that lands on Earth is called a _____.

A

meteorite

52
Q

Which layer of the sun gives off the light energy we see?

A

photosphere

53
Q

______ is the coldest of the inner planets.

A

Mars (because it has strong winds and polar ice caps)

54
Q

What is unique about Venus?

A

It rotates in the opposite direction as Earth.

55
Q

Polaris is also called what? Why is it important?

A

The north star is used for navigation.

56
Q

Name a constellation.

A

The big dipper.

57
Q

How can scientists determine the mass of the sun?

A
  1. From the speeds of the planets and

2. The shapes of their orbit around the sun.

Spencer Science lesson 5 asteroids, meteors, comets, and moons (1 decks)

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